The Holdo thing:
On first viewing, when it was first revealed their ship was being tracked, I thought “Hello, there’s a mole onboard who has planted a tracking beacon.” So, with that in mind, Holdo was quite within her rights not to divulge her plan to anyone she either doesn’t trust or whom is below her in rank. Loose lips and all that (this point still holds up, of course).
As the film continued, I thought we were being set-up for a lazy “OMG, Holdo is working for the First Order!” switch as she’s just burning fuel, powering up defenceless escape pods, keeping schtum etc. Thankfully that didn’t happen but, within the film itself, Holdo might also of thought there was a turncoat onboard thus making her play her cards close to her chest.
Both these things still play out over repeated viewings and made me appreciate her role more. Rian Johnson toyed with us and the pay-off was a heroic Holdo doing the hyperspace smash - lovely!